return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B2PLYP/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP/cc-pVTZ
 hartrees
Energy at 0K-476.627715
Energy at 298.15K-476.632169
HF Energy-476.457852
Nuclear repulsion energy101.015470
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B2PLYP/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3150 3022 13.87      
2 A1 1508 1447 3.21      
3 A1 1148 1101 1.85      
4 A1 1053 1011 0.85      
5 A1 633 607 23.58      
6 A2 3232 3100 0.00      
7 A2 1207 1158 0.00      
8 A2 909 872 0.00      
9 B1 3246 3114 4.29      
10 B1 963 924 3.55      
11 B1 842 807 0.34      
12 B2 3148 3021 12.61      
13 B2 1485 1425 0.57      
14 B2 1082 1038 26.11      
15 B2 674 647 0.50      

Unscaled Zero Point Vibrational Energy (zpe) 12139.1 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 11646.3 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B2PLYP/cc-pVTZ
ABC
0.74062 0.35674 0.26628

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.867
C2 0.000 0.739 -0.797
C3 0.000 -0.739 -0.797
H4 -0.911 1.250 -1.074
H5 0.911 1.250 -1.074
H6 0.911 -1.250 -1.074
H7 -0.911 -1.250 -1.074

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82071.82072.48152.48152.48152.4815
C21.82071.47861.08021.08022.20502.2050
C31.82071.47862.20502.20501.08021.0802
H42.48151.08022.20501.82193.09272.4991
H52.48151.08022.20501.82192.49913.0927
H62.48152.20501.08023.09272.49911.8219
H72.48152.20501.08022.49913.09271.8219

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.043 S1 C2 H4 115.218
S1 C2 H5 115.218 S1 C3 C2 66.043
S1 C3 H6 115.218 S1 C3 H7 115.218
C2 S1 C3 47.913 C2 C3 H6 118.187
C2 C3 H7 118.187 C3 C2 H4 118.187
C3 C2 H5 118.187 H4 C2 H5 114.982
H6 C3 H7 114.982
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.143      
2 C -0.204      
3 C -0.204      
4 H 0.138      
5 H 0.138      
6 H 0.138      
7 H 0.138      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.955 1.955
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.287 0.000 0.000
y 0.000 -24.653 0.000
z 0.000 0.000 -26.411
Traceless
 xyz
x -0.754 0.000 0.000
y 0.000 1.696 0.000
z 0.000 0.000 -0.941
Polar
3z2-r2-1.883
x2-y2-1.634
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.604 0.000 0.000
y 0.000 5.639 0.000
z 0.000 0.000 7.094


<r2> (average value of r2) Å2
<r2> 56.629
(<r2>)1/2 7.525